<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>
<script>
	var numbers=[1,2,3,4,5,4,3,2,1];
	
	console.log(numbers.indexOf(4));//3
	console.log(numbers.lastIndexOf(4));//5
	console.log(numbers.indexOf(4,4));//5
	console.log(numbers.lastIndexOf(4,4));//3
	console.log(numbers.lastIndexOf(4,4));//3
	
	
	var person={name:'xiaoming'};
	
	var people=[{name:'xiaoming'}];
	
	var movePeople=[person];
	
	console.log(people[0])
	console.log(typeof person)
	console.log(people.indexOf(person));//-1
	console.log(movePeople.indexOf(person));//0
	
	
</script>
</head>

<body>
</body>
</html>
